The best energy-efficient space heaters help warm rooms and keep electric bills in check. We tested top models to find out which ones kept us toasty.

Warm up your living room or home office this winter, and maybe save a few bucks on your electric bill while you’re at it.

When it comes to heating residential or commercial spaces, size doesn’t always equal better or more efficient heating. While commercial or rooftop units may be an excellent source for building-wide ...

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This month, I am continuing my series on commissioning “simple” HVAC equipment with hydronic unit heaters. These are about as ubiquitous and low-tech as any equipment in a new building and, therefore, ...